mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2025-01-13 16:40:22 +00:00
65fddcfca8
The replacement of <asm/pgrable.h> with <linux/pgtable.h> made the include
of the latter in the middle of asm includes. Fix this up with the aid of
the below script and manual adjustments here and there.
import sys
import re
if len(sys.argv) is not 3:
print "USAGE: %s <file> <header>" % (sys.argv[0])
sys.exit(1)
hdr_to_move="#include <linux/%s>" % sys.argv[2]
moved = False
in_hdrs = False
with open(sys.argv[1], "r") as f:
lines = f.readlines()
for _line in lines:
line = _line.rstrip('
')
if line == hdr_to_move:
continue
if line.startswith("#include <linux/"):
in_hdrs = True
elif not moved and in_hdrs:
moved = True
print hdr_to_move
print line
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-4-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/mm_types.h>
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#include <linux/pgtable.h>
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#include <asm/bugs.h>
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#include <asm/cacheflush.h>
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#include <asm/idmap.h>
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#include <asm/pgalloc.h>
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#include <asm/memory.h>
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#include <asm/smp_plat.h>
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#include <asm/suspend.h>
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#include <asm/tlbflush.h>
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extern int __cpu_suspend(unsigned long, int (*)(unsigned long), u32 cpuid);
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extern void cpu_resume_mmu(void);
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#ifdef CONFIG_MMU
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int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
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{
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struct mm_struct *mm = current->active_mm;
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u32 __mpidr = cpu_logical_map(smp_processor_id());
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int ret;
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if (!idmap_pgd)
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return -EINVAL;
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/*
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* Provide a temporary page table with an identity mapping for
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* the MMU-enable code, required for resuming. On successful
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* resume (indicated by a zero return code), we need to switch
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* back to the correct page tables.
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*/
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ret = __cpu_suspend(arg, fn, __mpidr);
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if (ret == 0) {
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cpu_switch_mm(mm->pgd, mm);
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local_flush_bp_all();
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local_flush_tlb_all();
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check_other_bugs();
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}
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return ret;
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}
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#else
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int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
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{
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u32 __mpidr = cpu_logical_map(smp_processor_id());
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return __cpu_suspend(arg, fn, __mpidr);
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}
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#define idmap_pgd NULL
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#endif
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/*
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* This is called by __cpu_suspend() to save the state, and do whatever
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* flushing is required to ensure that when the CPU goes to sleep we have
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* the necessary data available when the caches are not searched.
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*/
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void __cpu_suspend_save(u32 *ptr, u32 ptrsz, u32 sp, u32 *save_ptr)
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{
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u32 *ctx = ptr;
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*save_ptr = virt_to_phys(ptr);
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/* This must correspond to the LDM in cpu_resume() assembly */
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*ptr++ = virt_to_phys(idmap_pgd);
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*ptr++ = sp;
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*ptr++ = virt_to_phys(cpu_do_resume);
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cpu_do_suspend(ptr);
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flush_cache_louis();
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/*
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* flush_cache_louis does not guarantee that
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* save_ptr and ptr are cleaned to main memory,
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* just up to the Level of Unification Inner Shareable.
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* Since the context pointer and context itself
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* are to be retrieved with the MMU off that
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* data must be cleaned from all cache levels
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* to main memory using "area" cache primitives.
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*/
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__cpuc_flush_dcache_area(ctx, ptrsz);
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__cpuc_flush_dcache_area(save_ptr, sizeof(*save_ptr));
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outer_clean_range(*save_ptr, *save_ptr + ptrsz);
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outer_clean_range(virt_to_phys(save_ptr),
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virt_to_phys(save_ptr) + sizeof(*save_ptr));
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}
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extern struct sleep_save_sp sleep_save_sp;
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static int cpu_suspend_alloc_sp(void)
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{
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void *ctx_ptr;
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/* ctx_ptr is an array of physical addresses */
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ctx_ptr = kcalloc(mpidr_hash_size(), sizeof(u32), GFP_KERNEL);
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if (WARN_ON(!ctx_ptr))
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return -ENOMEM;
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sleep_save_sp.save_ptr_stash = ctx_ptr;
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sleep_save_sp.save_ptr_stash_phys = virt_to_phys(ctx_ptr);
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sync_cache_w(&sleep_save_sp);
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return 0;
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}
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early_initcall(cpu_suspend_alloc_sp);
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